Work around Ruby 2.0 Net::HTTP gzip inflation bug by disableing gzip support see 

 - https://github.com/sparklemotion/mechanize/issues/275, 
 - https://bugs.ruby-lang.org/issues/7831 
 - http://ruby-doc.org/stdlib-2.0/libdoc/net/http/rdoc/Net/HTTP.html#label-Compression